24 October 1948
Mauro was born in Dronero, Italy. He started his career as journalist writing for the local newspaper Gazzetta del Popolo in Turin. In 1981 he moved to La Stampa, as correspondent from the United States, and in 1988 he moved to la Repubblica as correspondent from Moscow, Russia.
In 1990 he re-joined the newspaper La Stampa as co-editor, and in 1992 as editor.